Year	metric tons
1960	58510
1961	55010
1962	65230
1963	66250
1964	85470
1965	97280
1966	110100
1967	119420
1968	120130
1969	115850
1970	155899
1971	245296
1972	246394
1973	250593
1974	257336
1975	256500
1976	260585
1977	262178
1978	264068
1979	268753
1980	261293
1981	260132
1982	269715
1983	272312
1984	263933
1985	245353
1986	271573
1987	260808
1988	279514
1989	300449
1990	316328
1991	267705
1992	318415
1993	255499
1994	281232
1995	366101
1996	357484
1997	412220
1998	483482
1999	477365
2000	467095
2001	476544
2002	511719
2003	505839
2004	509201
2005	579537
2006	636901
2007	615507
2008	744575
2009	751006
2010	817516
2011	856614
2012	922652
2013	1000061
2014	1073059
2015	1027058
2016	1041498
2017	1212474.97
2018	1169478
2019	1114556.25
2020	1044812.42
2021	1080855
2022	1043230